Jointer-guard.



-I f II A.YF. HOWE.

JOINTER GUARD.

APPLICATION FILED JULY I1. I9I3.

Patented 00L. 19, 1915.

2 SHEETS-SHEET I.

I IIIIII IIIII A. F. HO'WE.

JOINTER GUARD.

APPLICATION FILED IuLY I7. 1913.

1,157,109. Patented om.. 19, 1915.

2 SHEETS-SHEET 2.

. "to be `dressedalong;E the 'table @granite City? in theboiintyofjMadison and .f

State of Illinois, Lhave iniiente'd a fiiew Tand iseful "Improvement,'in "Jointer-Gqufards, of which the'folglofwingis "a sbecication:

Y g :Myifvecinfrelaes wia andf'has forfits-object"to'ipreventfjthehands` .operatr from' revolyinglmiyes. While passingLthje materiall ittherefromfwhenlirfished. 'r?

, *It "onsists inif featifiresi ofinovelty as here;

inafter described? andieYlairned,l reference `vibe;- iilg had t' theaecomp anying-draiyizing yformiiigj part of epeeicatio'; 'Whereon,

fiFigure 'is a Atop 'Inyafimproved j'oiiiter "guardiI asfaippliedtofacylindrical `Vreyolyiag jbutter andits table (broken: away-)1;

n having the" cuttingfr edges of the knivesll projecting, thr'iigh part"off their travel., above Jchef-table f?) in usualj 'yvelllnownmanne'rff- 1 `=`rl-lVlyfiInproyedA jolnter guard comprises Va 'hod "or'rnain membery c vwhich is arranged over the ],ointer cutter a;(orthereabont transversely andpara'llel to the table 72," prefera'blylfforV rits etire ryific'tli and" beyond' oneJ from? f y vSpecicativonofLetters.Zlib-Agent.v

`'ofthe table-Z2 and thence directed'tangen.

4Patented 0015,19', 1915. 'JS-erllldf'- n the'imler endete-dependent armorauXiL on its underside vto `Within a1 lshort" distu'iee tially pwardtoits outer-endf'ata suitable distance from the` table"l and... suitably-indicated by the" arrow, in Fig. 2, thearin dir (erfarrnsaccording x*tothe' .Width ofthe material and Corresp ending number. .ofarms engaged)will beengaged" by thelforward latter is advanced, andraised'intcithe.'Jeosi tionfindi'catedl-,by dottedglines inl-FigaZ, or 1vso 'that the material'` e will "pass beneath .the

2 on. the front. side of thehood-@fishinged i i'ary'member Ziyvhich'ispreferably" :convexV operating "as a guard to prevent'x the handsoifvtheV operator 'from comingin-Contact with the knives 1' @f thejointef'marea."1.5111114. larly, .tothe rod 4f on the reary sdeoff'thehoodfc 'is hinged in each'notch fgfal prefer.- a'bly,. vertically.dependent arm or, axilia"ry member d," which' is suitably shapedatj itsbottomfend Within a suitable distance of the lover; and rearward Ii'rom` J the 0in-ter r cutter @its forward end Will, engage the armldfand thereby ,constrainF itY .outward on--its so that as'fthematerial-'eis advanced hinge 4 into the position indicatedfby dot- .Y

ted lines in, Fig. 2, theibottom-end of-the arm, CZ" in sodoing.bearing'on` the material- 'e and thereby operating cooperativelywith the Ehood .0, as a v,guard orpreventingithe hands offthe operatorfrom ,coming incont`act with thekniyes lwhen withdnawing' the finishedmaterial e from' the-tablefb. For breyenting inwardfmovement Iofthe armsel about their hinge 4when-v they.,l are engagedfbythe'materialjfethetrear side .of Y

each: 'isf'forrned its hingea4 yyitha dependent. lug 5i Whichfin thenormal'posie nor'nialnositieii. isiadapted tongage ajcdfs'ftEor/supportingf the'hoedlctand its l through, and is firmly held in aboss 10,

which is formed in a lever f, which is fulcrumed on and movable in avertical plane about a pin or stud 11 projecting from` the side of thetable i Projeetingcentrally from the outer face of, and integral withthe hub 12 of the lever f, is a vstud 12, through which, and through thehub 12 the fulcrum pin 11 passes as shown, and on the stud 12 is pivotedloosely at one end, a lever f, which is normally in alinement with, andrearward of the lever 7".

Projecting radially from the periphery of the stud 12 is a lug 13 (Fig.2) which is adapted to engage in a recess 13 formed part-way around theinside of the hub 1-1 of the lever f', the latter being provided with acounterbalance weight 15 which yis adjustable thereon, and the whole soarranged that when the levers j, f, are in their normal position inalinement with each other as seen in Fig. 2, the recess 13vis broughtinto engagement at its lower end, by the weight of the lever j, with thelug 13 of the stud 12, whereby the hood c with its appendages isnormally heldin place over the jointer cutter a.

The end of the bolt 8 where itpasses through and beyond the lever f isprovided with a nut 16 which is tightened against the outer face of theboss 10, the latter being clear of the under or concave side of the hoodc at all times in the operation of the parts, as hereinafter moreparticularly referred to, and furthermore, in this connection, from thetop or convex side of the hood c projects upward a lug or handle 17.

Depending from the lever f adjacent to its boss 10, is a bar 18 whichisfpreferably, T-shaped in cross section and radial to the fulcrum 110ilthe levers f, f', the'bar 18 being adapted to slide Yfrictionally tightthrough a correspondingly shaped guide 18 fixed to the side-vol' thetable b. The lever f is formed at its-outer end beyond the boss 10, witha handle 19, whereby,

when the material to be dressed by the jointer cutter a is too thickJfor the` auto- Y matic operation of the arms d, cl in its passage alongthe table b as described, the lever fwith the hood c and its appendagescan be raised by hand about they fulcrum 11 sufciently to allow of thepassage of the material and the automatic action of the guard, the lever7 when so raised being held in the desired position'by'the rictionalgrip of the bar 18 in its guide 18. Furthermore, when desired, the leverf with the hood c and its appendages may be thrown up, and over, aboutthe fulcrum 11 in the direction of the curved arrow in Fig. 2 entirelyclear of the jointer cutter a, in which case, when the lever 7 is in theopposite' position the counterbalance lever f', in lieu of remaining inalinement with the lever f will tall to an inclined position thereto, orbelow the table b, owing to the play allowed for the lug 13 of the stud12 along the recess 13', as indicated by the dotted lines in Fig. 2.

In applying my improved jointer guard in a caserwhere the edge of aboard or other wide material is to be dressed by the jointer cutter a,the hood c withits appendages is withdrawn by its handle17 to one sideof the table b and beyond the lever f so as to uncover the jointercutter (L for a part of its length, the boss 7 of the hood c in sodoing, sliding along thebolt 8 (which is held fast by the boss 10 of thelever f) until stopped by the inner face of the boss 10 of the lever f,or in the position seen inzFig. 5, when the board to be dressed on itsedge is passed along the table b over the uncovered part vof the cuttera. the operators hands being intercepted and prevented from coming incontact with the cutter knives 1 by the adjacent end of the retractedguard.

What I claim as mv invention and desire to secure by Letters Patentis 1. In a jointer guard, the combination of a hood member extendingabove the table and adjustable relative thereto` a plurality ofseparately movable fingers pivotally supported upon said hood member andextending in advance of the cutter to form a shield and supported abovethe table, said lingers having upwardly and forwardly directedendsadapted to ride over the work presented to the cutter in suchfashion that the tingers engaged by the work are-swung upwardly topermit its passage, the fingers not so engaged remaining in their normalposition whereby to form guards at the sides of the work. 2. In ajointer guard, the combination of a work table for supporting thematerial to be operated upon, a bar arranged above said table, meanswhereby said bar may be instantaneouslyV adjusted to different heightsabove the table, a set of independently movable guard arms carried bysaid bar. said guardV arms having their-lower free ends eX- tendingupwardly and outwardly at an angle whereby when the material to beoperated upon is passed under the arms it will contact with saidextensions and lift the respective. guard arms in its path, and meanscarried by said bar for engaging said guard arms in. their normal orlower position, terial to be operated upon irrespective of Whzreby theforwardly and upWar llyeXl v the/thickness of said material. ten ingortions o the arms are maintaine -y Y K in such aliigula-r relation tothe Work table in ANDREW F HOWE 5 different vertical adjustments of thebar Witnesses:` l

that the guard arms are always in proper A'. J. Groolplam'r,v positionto be lfted'by Contact with the Ina- K vJ. C. STEELE.v p

Copies of this patent may be obtained for ive cents-each, vby addressingthe Commissioner of Patents,

. Washington, D. C. Y Y

